aa_	count_n
0	0
1	51385
2	13123
3	1016
4	0
5	0
6	0
7	0
8	0
9	0
A	1613
B	0
C	101
D	1730
E	2287
F	1830
G	987
H	336
I	2282
J	0
K	3749
L	3644
M	195
N	2909
O	0
P	893
Q	2005
R	861
S	2453
T	1800
U	0
V	1713
W	177
X	0
Y	810
Z	0